E20
Hansa
Gas-Fan Interlock / Safety Fault
Hansa oven shows E20 and the fan-assisted gas burner (if equipped) fails to operate correctly.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty airflow or pressure switch, Defective fan proving switch, Wiring fault between fan and gas control, Control board safety circuit error
How to Fix / Troubleshooting
Safety first: Turn off gas and power. Gas appliances must be serviced with extreme caution.
- Check fan operation: Ensure the convection or combustion fan runs when the gas mode is selected. If not, diagnose the fan motor and its supply.
- Inspect pressure/airflow switch: Locate the small diaphragm or pressure switch connected to tubing from the fan housing. Check tubing for blockages or cracks. Replace the switch if it does not change state when the fan runs.
- Verify wiring: Ensure all safety interlock wires are intact and firmly connected.
When to call a technician: E20 involves gas safety interlocks; professional diagnosis is essential.
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Repair Difficulty
Professional Required
5/5
Required Part
Airflow / Pressure Switch
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